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in srxrnrrnnr OFFICE.

JNO. SAl/VYER, OF FITCHBURGH, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND THOS.

i HALE. 1

APPARATUS FOR HEATING AND VENTILATING BUILDINGS.

Specification of Letters Batent No. 14,642, dated April 8', 1856.

To all whom t may concern.'

Be it known that I, JOHN SAWYER, of Fitchburgh, in the county of Vorcester and State of Massachusetts, have invented an Improved Apparatus for Heating and Ventilating a Building; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, on which- Figure l, exhibits a front elevation of the same; Fig. 2, a side View of it; Fig. 3, a vertical, central, and longitudinal sectional of it; Fig. 4L, a top View.

In the drawings A, exhibits an air heating chamber, within which there is arranged a smoke funnel or discharge flue B, the same being carried vertically through said chamber and opening out of an auxiliary stove or' ireplace C, arranged inside of the chamber A, as seen in the drawings. Without the said chamber A, there may be arranged a stove D, (for cooking or heating) having a winding or spiral funnel or discharge pipe E, arranged so as to extend around and open into the smoke funnel B, hereinbefore mentioned.

Directly over the air heating chamber A, the smoke funnel B, is surrounded concentrically by a hot-air flue F, which rises above the same and passes through a Ventilating chamber Gr, arranged above and on the top of the air heating chamber A, as seen in the drawings.

Passages a, a, b, are formed through both the top and the bottom of the Ventilating chamber, the said passages having applied to them slide valves c, 0, (l, d, by which they may be opened or closed either in whole or in part as occasion may require. The hot yair flue F, at each of its ends is also pro-- vided with slide valves arranged as seen at e, e, in Fig. 4L, the rods of the two lower valves of the said hot air flue, being exhibited at f, f, in Fig. 2. Each of said valves is formed with a semi-circular recess or so as to embrace 180, of the smoke flue and cover that much of the horizontal section of the air flue extending around t-he smoke-flue, each set of valves being arranged and applied so that its two valves may be moved in opposite directions. From the hot air chamber A, one or more pipes, II, may extend so as to carry or lead heated air to one or more apartments 1n a story (of the building) which may be supposed to be arranged directly above the hot air chamber, it being understood that the height of the hot air chamber is to correspond with or be about equal to that of the vlowermost story of the building in which the heating and ventilating apparatus may be arranged.

In the application of such heating apparatus to a building, it is intended that the air heating chamber A, shall be placed in the lowest story thereof and alsothat the Ventilating chamber shall extend into the second as well as into each of the other stories, that there may be in the same building;

or such story may have its separate Ventilating chamber in which case the several Ventilating chambers would be disposed one over the other and having connection passages and closing valves to the same. The upper Apart or end of the air heating chamber, or the upper one of the series should be made to open into or to have pipes of communication with the atmosphere whereby the foul air which may be received into the Ventilating chamber may be suffered to escape into the said external atmosphere. In order to Ventilate, one or more stories through which the Ventilating chamber' may pass openings or pipes, I, K, (see Figs. l and 2) may be made in or let into the Ventilating chamber from any room or rooms of said story or from the upper and lower portions of any one room thereof; and should it be desirable to heat any of the rooms by means of separate stoves or ireplaces, they may be made to communicate with the main smoke flue or funnel, B, by lateral pipes as seen at L, M, in Fig. 3. One or more dampers N, O, may be arranged in the smoke discharge flue as seen in Fig. 3, the rods being shown at g, g, in Fig. 2. By means of the hot air flue, F, extending through the Ventilating chamber, Gr, and surrounding the main smoke flue, not only may hot air be conveyed from the hot air chamber, A, into the third story of the building, but the air passing up such flue may not only be further heated by that part of the smoke flue which is surrounded by the air flue, but said air may be used to impart heat to the Ventilating chamber so as to improve its Ventilating powers or properties.

The object of the lower set of Valves of having made a peculiar combination and arrangement of the smoke pipe, air heating chamber, hot air ue, and ventilating chamber, my invention rests thereon, and consequently What I claim is- The above described arrangement of the Ventilating chamber Gr, with the main hotair flue F, the smoke Hue B, and air heating chamber A, the Ventilating chamber, and hot air flue having valves applied to them as specified, the whole being capable of being used in heating and Ventilating the apartments or stories of a building.

In testimony whereof I have hereunto set my signature this twenty-fourth day of December, A. D. 1855.

JOHN SAWYER.

Witnesses:

THOMAS C. CALDWELL, ASA PARTRIDGE. 

